The noble gases
are the chemical elements in group 18 of the periodic table. They are the most stable due to having the maximum number of valence electrons their outer shell can hold.
What atom has the most stable configuration?
The noble gases
rarely form compounds. They have the most stable configuration (full octet, no charge), so they have no reason to react and change their configuration. All other elements attempt to gain, lose, or share electrons to achieve a noble gas configuration.
Which is the most stable atom?
Atoms are at their most stable when their outermost energy level is either empty of electrons or filled with electrons.
Sodium atoms
have 11 electrons. Two of these are in the lowest energy level, eight are in the second energy level and then one electron is in the third energy level.
Which of the following electron configuration represents the most chemically stable atom?
The most stable electron configuration is that of
a noble gas
, due to the fact that its valence shell is filled. For helium, that means two valence electrons (a duet) in the 1s sublevel, and for the rest it means eight valence electrons (an octet) in the outermost s and p sublevels.
What does it mean if an atom is chemically stable?
A stable atom is a happy atom! … – An atom is chemically stable if
its outer energy level (valence level) is completely filled with electrons
. (8 electrons) – Energy levels are filled by elements gaining, losing, or sharing electrons.
What is the largest stable element?
The heaviest naturally stable element is
uranium
, but over the years physicists have used accelerators to synthesize larger, heavier elements. In 2006, physicists in the United States and Russia created element 118.
Which is the rarest element on the Earth?
A team of researchers using the ISOLDE nuclear-physics facility at CERN has measured for the first time the so-called electron affinity of the chemical element
astatine
, the rarest naturally occurring element on Earth.
Which is more stable atom or ion?
The atoms will have the tendency to gain or lose electrons in order to achieve the electronic configuration of its nearest inert gas. … Ions are formed when atoms gain or lose electrons to achieve the electronic configuration of its nearest inert gas. So,
ions
are more stable than atoms.
Why does the octet rule exist?
The octet rule exists because
the atoms of many elements become more stable by attaining a noble gas electron configuration
. Most noble gases have eight valence electrons (He has only 2) which gives them a full outer shell of electrons in the s and p sublevels of their highest energy level.
How do you know if an atom is stable?
An atom is stable
if the forces among the particles that makeup the nucleus are balanced
. An atom is unstable (radioactive) if these forces are unbalanced; if the nucleus has an excess of internal energy. Instability of an atom’s nucleus may result from an excess of either neutrons or protons.
Which has more stable configuration?
1. Which Electron Configuration is the Most Stable? Ans. It is observed that
the noble gases
have the most stable orbital configuration.
Which electron configurations are the most stable?
A full valence shell
is the most stable electron configuration. Elements in other groups have partially filled valence shells and gain or lose electrons to achieve a stable electron configuration.
Does a shell have to contain electrons to exist?
One electron can be boosted to many different energy levels. … (A shell is just a conceptual model; hence;
it doesn t really exist with or without
the electron,A shell is just a region of space which may or may not contain electrons,A shell is a form of energy that requires electrons in order to exist.)
Can atom survive without electron?
Matter becomes stable only if it is electrically neutral. So
atoms without electrons do exist
and must have their own states (charged or uncharged) transferred back and forth in their environments. An atom stripped out all of their electrons is called an ion and it’s charged.
Which shows that an atom is stable?
A stable atom has a net charge of 0. In other words, it has
an equal number of protons and electrons
. The positive protons cancel out the negative electrons. … An atom becomes radioactive when its nucleus contains too many or too few neutrons.
Is oxygen stable or unstable?
One oxygen atom is unstable
since it has only 6 electrons in the outermost shell. For an atom to be stable it needs 8 electrons. So, for the oxygen atom to be stable it requires two more electrons in the valence shell.
